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t Harding Lawson Associates Table 1. Summary of Results of Chemical Analyses on Groundwater Samples Results presented in jrg/I(ppb) TPH Ethyl- Total Ethylene Fecal Date as Gas Benzene Toluene benzene Xylenes Dibromide Lead Coliform MW-1 Nov-86 4000 ND ND - 76 ND - Mar-87 - 85 42 - 240 - - a Dec-87 - ND 15 70 55 - - i. Jul-88 ND ND ND ND ND - - i Mar-89 ND ND ND ND ND - - Jun-91 690 190 1.1 18 8.2 - Jun-91— 680 170 0.9 16 7 - Sep-91 340 65 0.9 9.1 2.7 - - <2 + Dec-91 2000 820 28 90 120 - - 16 !f Mar-91 2400 910 23 48 59 <2 MW-2 Nov-86 ND ND ND NO NO - Mar-87 ND ND ND # Dec-87 - NO ND ND ND 1 Jul-88 NO ND ND ND NO - - Mar-89 ND NO ND ND ND - Jun-91 ND NO ND NO ND - - Sep-91 ND NO ND NO ND - - <2 Dec-91 ND ND ND ND ND - - <2.2 Mar-31 ND ND ND ND ND - - <2 " MW-3 Nov-86 ND ND ND - ND ND - Mar-87 - ND ND - ND - - Dec-87 - ND ND NO ND - - E��rrr Jul-88 NO ND NO ND ND - - Mar-89 NO ND ND ND ND - - Jun-91 ND ND ND ND ND - - r Sep-91 NO ND ND ND ND - - <2 Dec-91 ND ND ND ND ND - - 5.1 Mar-91 ND ND ND ND ND - - <2 MW-4 Nov-86 NO ND ND - ND ND - Mar-87 - NO ND - ND - - Dec-87 - ND ND ND ND - - Jul-88 ND ND ND ND ND - - Mar-89 ND ND ND ND ND - - Jun-91 ND ND ND ND ND - - �' Sep-91 ND ND ND ND ND - - <2 ' Dec-91 ND ND ND ND NO - - 2.2 a Mar-91 ND ND ND ND ND - - <2 MW-5 Mar-87 - NO NO - NO - - Dec-87 - NO ND ND ND - - Jul-68 NO NO NO ND NO - - Mar-89 NO NO NO ND NO - Jun-91 ND NO NO ND NO Sep-91 NO NO ND ND NO - - <2 1 Dec-91 NO NO NO ND NO Y = <2.2 LLL+++ Mar-91 ND NO 1.1 ND 1.2 <2 ' 032087T1/L15